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Finding the Fourth Proportional to 636,617.60, 878,489.44 and 364,686.56

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Solution

The fourth proportional to 636,617.60, 878,489.44 and 364,686.56 is: 503,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,617.60 : 878,489.44 = 364,686.56 : x
  2. Step 2: Convert to fraction form
    636,617.60/878,489.44 = 364,686.56/x
  3. Step 3: Cross multiply
    636,617.60x = 878,489.44 × 364,686.56
  4. Step 4: Simplify right side
    636,617.60x = 320,373,291,869.93
  5. Step 5: Solve for x
    x = 320,373,291,869.93/636,617.60
  6. Step 6: Final answer
    x = 503,242.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.